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Question 4 In an aquifer there are three horizontal layers: A, B and C on top of each other: A: the saturated horizontal hydraulic conductivity of layer A is 20 m/d, the thickness of layer A is 20 m B: the saturated horizontal hydraulic conductivity of layer B is 40 m/d, the thickness) of layer 8 is 30 m C: the saturated horizontal hydraulic conductivity of layer C is 50 m/d, the thickness of the layer C is 10 m The hydraulic gradient in the aquifer for flow parallel to layering is 0.001. Compute: a) The flow rate (Q) per unit width (i.e. width = 1 m) through each of the three layers. b) the average horizontal hydraulic conductivity of the aquifer. c) the aquifer has a constant porosity of 0.3 everywhere. In which layer is the average linear groundwater velocity of water greatest? How long does it take for a water molecule (on average) to ravel a distance of 1000 meters in this layer?

Question 4 In an aquifer there are three horizontal layers: A, B and C on top of each other: A: the saturated horizontal hydraulic conductivity of layer A is 20 m/d, the thickness of layer A is 20 m B: the saturated horizontal hydraulic conductivity of layer B is 40 m/d, the thickness) of layer 8 is 30 m C: the saturated horizontal hydraulic conductivity of layer C is 50 m/d, the thickness of the layer C is 10 m The hydraulic gradient in the aquifer for flow parallel to layering is 0.001. Compute: a) The flow rate (Q) per unit width (i.e. width = 1 m) through each of the three layers. b) the average horizontal hydraulic conductivity of the aquifer. c) the aquifer has a constant porosity of 0.3 everywhere. In which layer is the average linear groundwater velocity of water greatest? How long does it take for a water molecule (on average) to ravel a distance of 1000 meters in this layer?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Question 4 In an aquifer there are three horizontal layers: A, B and C on top of each other: A: the saturated horizontal hydraulic conductivity of layer A is 20 m/d, the thickness of layer A is 20 m B: the saturated horizontal hydraulic conductivity of layer B is 40 m/d, the thickness) of layer B is 30 m C: the saturated horizontal hydraulic conductivity of layer C is 50 m/d, the thickness of the layer C is 10 m The hydraulic gradient in the aquifer for flow parallel to layering is 0.001. Compute: a) The flow rate (Q) per unit width (i.e. width = 1 m) through each of the three layers. b) the average horizontal hydraulic conductivity of the aquifer. c) the aquifer has a constant porosity of 0.3 everywhere. In which layer is the average linear groundwater velocity of water greatest? How long does it take for a water molecule (on average) to travel a distance of 1000 meters in this layer?
Transcribed Image Text:Question 4 In an aquifer there are three horizontal layers: A, B and C on top of each other: A: the saturated horizontal hydraulic conductivity of layer A is 20 m/d, the thickness of layer A is 20 m B: the saturated horizontal hydraulic conductivity of layer B is 40 m/d, the thickness) of layer B is 30 m C: the saturated horizontal hydraulic conductivity of layer C is 50 m/d, the thickness of the layer C is 10 m The hydraulic gradient in the aquifer for flow parallel to layering is 0.001. Compute: a) The flow rate (Q) per unit width (i.e. width = 1 m) through each of the three layers. b) the average horizontal hydraulic conductivity of the aquifer. c) the aquifer has a constant porosity of 0.3 everywhere. In which layer is the average linear groundwater velocity of water greatest? How long does it take for a water molecule (on average) to travel a distance of 1000 meters in this layer?
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